What are air strippers?
Air Strippers remove VOCs, ammonia, and other contaminants from the polluted water streams. High-efficiency air strippers are designed and produced by Netsol Water, for use in commercial and municipal settings. The volatile gaseous substances that are dissolved in a contaminated water stream are removed by an air stripper, and transferred to an air stream.
Then, as needed, the clean water from the stripper can be directed to a sump or drain. To treat the resulting contaminated air before it is released into the atmosphere, we manufacture a full line of scrubbers and gas adsorbers.
Applications for Air Strippers
· Treatment of potable water
· Industrial site clean-up
· Remediation of groundwater
· Treatment for leachate
· Decrease in nitrate concentration
· Removal of VOCs
What are air strippers?
These are high-efficiency strippers for commercial and institutional uses. With a cylindrical tower containing a specifically created packing media, which offers a significant surface area for air/water contact, the air stripper normally employs a counter-flow design.
Air moves upward while contaminated water travels downward through the packing. The contaminated water stream transfers VOCs or other contaminants to the air stream, which exits the tower through the top. The tower's base has a clean water outlet.
Features of air strippers
· Lower pressure drop.
· Capacities of polluted liquids up to 5,000 GPM for a single tower.
· Maximum efficiency of 99.9%.
· Designs for both single and numerous towers.
· Distributors of liquids in one or more stages for polluted water.
· An extensive selection of packaging materials, such as rings, saddles, and structured packing.
· Removal of volatile organic compounds (VOCs) and other substances, with high vapour pressure and low aqueous solubility, such as toluene, xylenes, benzene (BTX), Ethyl benzene, Tetrachloroethylene (PCE), 1,2-Dichloroethane (TCE), trichloroethylene (DCE), and ammonia.
· Removal of petroleum fuel leakage-related groundwater pollutants.
· VOCs from drinking water are removed at water treatment plants.
Theory of Air Stripping
Henry's Law serves as the foundation for the Air Stripper operation theory.
Henry's law asserts that for a system with a liquid phase and a gas phase, at a constant temperature:
p = (kH)/(C)
The partial pressure of a VOC or other gas above a liquid is known as “p”.
“C” stands for the VOC's dissolved partial pressure (or concentration) in the liquid.
For the specific gas (solute), liquid (solvent), and temperature, “kH” is the Henry's Law Constant.
Therefore, a part of the VOC or other dissolved gaseous components will leave the liquid phase, and enter the gas phase air stream that leaves from the top of the stripper, in order to reach the equilibrium concentration of gas above the liquid phase, indicated by Henry's law.
When the Henry's law constant, defined as the concentration in the gas phase divided by the concentration in the liquid phase is high, air stripping is most effective.
Features of the Air Stripper Design
· Mild steel, stainless steel, aluminium, FRP, and other materials are available for construction.
· Rings, saddles, and structured packing are among the several air stripper packing materials.
· Electrical controls and full instrumentation are provided.
· It is resistant to corrosion.
· Spray nozzles are without plugs for effective water dispersion and wetting of packaging.
How can we assist?
Netsol Water provides expert guidance and technical support for all air, water and wastewater related issues. Our certified specialists have worked on a wide range of air-strippers, in a variety of air and wastewater treatment sectors.
We will assist you in ensuring that your industry complies with all authority laws. We are the experts, from design to installation, to support and maintenance.